CN113324076A - Pilot-operated type safety valve diaphragm formula valve clack structure - Google Patents
Pilot-operated type safety valve diaphragm formula valve clack structure Download PDFInfo
- Publication number
- CN113324076A CN113324076A CN202110754744.2A CN202110754744A CN113324076A CN 113324076 A CN113324076 A CN 113324076A CN 202110754744 A CN202110754744 A CN 202110754744A CN 113324076 A CN113324076 A CN 113324076A
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- CN
- China
- Prior art keywords
- valve
- rod head
- diaphragm
- valve rod
- clack
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/365—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a diaphragm
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A pilot operated safety valve diaphragm type valve clack structure mainly comprises a valve clack, a diaphragm, a supporting plate, a pressure ring, an adjusting screw, a screw sleeve and a valve rod head, wherein a valve clack groove is formed in the valve clack, a valve rod head connecting block is arranged in the valve clack groove and is inserted in the valve clack groove through an elastic check ring, sealing is realized through an O-shaped ring, the valve clack and the diaphragm are tightly matched under the pre-tightening of a circle of screw through the pressure ring, and the tightness state of the diaphragm is adjusted through the supporting plate; the valve rod head connecting block is provided with a valve rod head connecting hole, the valve rod head is inserted in the valve rod head connecting hole and is connected in a matching mode in a rolling mode, and the valve rod head connecting block has the advantages that the valve clack is not easy to fall off, the structure is light and flexible, the low-temperature and low-pressure sealing performance is good, the service performance of the safety valve is well guaranteed, and the like.
Description
Technical Field
The invention relates to a diaphragm type valve clack structure of a pilot operated safety valve, in particular to a valve clack structure of a safety valve with low temperature, low pressure and large caliber, belonging to the technical field of valves.
Background
For some working conditions with higher low-temperature and low-pressure sealing requirements, in order to ensure the sealing performance of the pilot operated safety valve, the existing valve clack structure generally adopts a soft sealing structure, and the sealing material adopts a low-temperature-resistant modified tetrafluoro material. Because the specific sealing pressure of the tetrafluoro material is relatively high, and the sealing performance under low temperature and low pressure is difficult to ensure under the condition that the valve clack structure is unreasonable and has poor activity.
Disclosure of Invention
The invention aims to overcome the defects of the existing valve clack structure, and provides a safety valve diaphragm type valve clack structure which can ensure that a valve clack is not easy to fall off, has a light structure and good flexibility, has good low-temperature and low-pressure sealing performance, and can well ensure the service performance of a safety valve.
The invention aims to provide a membrane type valve clack structure of a pilot operated safety valve, which mainly comprises a valve clack, a membrane, a supporting plate, a pressure ring, an adjusting screw, a screw sleeve and a valve rod head, wherein the valve clack is provided with a valve clack groove, a valve rod head connecting block is arranged in the valve clack groove, the valve rod head connecting block is inserted in the valve clack groove through an elastic check ring and realizes sealing through an O-shaped ring, the valve clack and the membrane are tightly matched under the pre-tightening of a circle of screw through the pressure ring, and the tightness state of the membrane is adjusted through the supporting plate.
Preferably, the method comprises the following steps: the valve rod head connecting block is provided with a valve rod head connecting hole, the valve rod head is inserted in the valve rod head connecting hole and is connected in a matched mode in a rolling mode, and the valve rod head, the screw rod, the supporting block and the supporting tube form a valve rod structure together.
Preferably, the method comprises the following steps: the diaphragm and the supporting plate are provided with screw sleeve connecting holes in the middle, the threaded end of the screw sleeve penetrates through the screw sleeve connecting holes and is tightly matched with the diaphragm and the supporting plate through the gasket, the gasket and the nut, the screw sleeve is provided with an adjusting screw threaded hole in the middle, the adjusting screw is screwed into the adjusting screw threaded hole, one end of the adjusting screw is supported on the valve rod head connecting block, the screw in and out of the adjusting screw can drive the screw sleeve to move up and down, and the screw sleeve drives the supporting plate to move up and down so as to adjust the tightness state of the diaphragm.
Preferably, the method comprises the following steps: the valve rod head is of a spherical structure and is inserted into the valve rod head connecting hole, so that the valve rod head can flexibly and freely rotate, and the flexibility of the valve clack is ensured.
Preferably, the method comprises the following steps: the adjusting screw is provided with a through hole, so that the medium pressure on two sides of the diaphragm is always in a balanced state, and the sealing performance of the diaphragm is ensured.
The invention belongs to an improvement of the prior art, and has the characteristics of difficult falling of a valve clack, light and handy structure, good flexibility, good low-temperature and low-pressure sealing performance, capability of well ensuring the service performance of a safety valve and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention will be described in detail with reference to the accompanying drawings, wherein as shown in fig. 1, the invention mainly comprises a valve clack 1, a diaphragm 2, a supporting plate 3, a pressing ring 4, an adjusting screw 5, a threaded sleeve 6 and a valve rod head 7, wherein the valve clack 1 is provided with a valve clack groove 18, a valve rod head connecting block 8 is arranged in the valve clack groove 18, the valve rod head connecting block 8 is inserted in the valve clack groove 18 through an elastic retainer ring 12 and sealed through an O-shaped ring 13, the valve clack 1 and the diaphragm 2 are tightly matched under the pretightening force of a circle of screw 17 through the pressing ring 4, and the tightness state of the diaphragm 2 is adjusted through the supporting plate 3.
The valve rod head connecting block 8 is provided with a valve rod head connecting hole 19, the valve rod head 7 is inserted into the valve rod head connecting hole 19 and is connected in a matching mode in a rolling mode, and the valve rod head 7, the screw 14, the supporting block 15 and the supporting tube 16 form a valve rod structure together.
The middle of the diaphragm 2 and the supporting plate 3 is provided with a threaded sleeve connecting hole 21, the threaded end of the threaded sleeve 6 penetrates through the threaded sleeve connecting hole 21 and is tightly matched with the diaphragm 2 and the supporting plate 3 through the gasket 9, the gasket 10 and the nut 11, the middle of the threaded sleeve 6 is provided with an adjusting screw threaded hole 20, the adjusting screw 5 is screwed into the adjusting screw threaded hole 20, one end of the adjusting screw is supported on the valve rod head connecting block 8, the adjusting screw 5 is screwed in and out to drive the threaded sleeve to move up and down, and the threaded sleeve 6 drives the supporting plate 3 to move up and down so as to adjust the tightness state of the diaphragm.
The valve rod head 6 is of a spherical structure and is inserted into the valve rod head connecting hole 19, so that the valve rod head can flexibly and freely rotate, and the flexibility of the valve clack is ensured.
The adjusting screw 5 is provided with a through hole, so that the medium pressure on two sides of the diaphragm 2 is always in a balanced state, and the sealing performance of the diaphragm 2 is ensured.
Claims (5)
1. The utility model provides a pilot-operated formula relief valve diaphragm formula valve clack structure, it mainly includes valve clack (1), diaphragm (2), fagging (3), clamping ring (4), adjusting screw (5), swivel nut (6), valve rod head (7), its characterized in that: the valve clack (1) on seted up valve clack recess (18), be equipped with valve rod head connecting block (8) in valve clack recess (18), this valve rod head connecting block (8) are pegged graft through circlip (12) in valve clack recess (18) to realize sealed through O type circle (13), valve clack (1) and diaphragm (2) realize closely cooperating through clamping ring (4) under the pretension of round screw (17), diaphragm (2) pass through fagging (3) are adjusted the elasticity state.
2. The pilot operated safety valve diaphragm valve flap structure of claim 1, wherein: the valve rod head connecting block (8) is provided with a valve rod head connecting hole (19), the valve rod head (7) is inserted into the valve rod head connecting hole (19) and is connected in a matched mode in a rolling mode, and the valve rod head (7), the screw rod (14), the supporting block (15) and the supporting pipe (16) form a valve rod structure together.
3. The pilot operated safety valve diaphragm valve flap structure of claim 1, wherein: the adjusting device is characterized in that a threaded sleeve connecting hole (21) is formed between the diaphragm (2) and the supporting plate (3), the threaded end of the threaded sleeve (6) penetrates through the threaded sleeve connecting hole (21), the diaphragm (2) and the supporting plate (3) are tightly matched through the gasket (9), the gasket (10) and the nut (11), an adjusting screw threaded hole (20) is formed in the middle of the threaded sleeve (6), the adjusting screw (5) is screwed into the adjusting screw threaded hole (20), one end of the adjusting screw is supported on the valve rod head connecting block (8), the screw in and out of the adjusting screw (5) can drive the threaded sleeve to move up and down, and the threaded sleeve (6) drives the supporting plate (3) to move up and down to adjust the tightness state of the diaphragm.
4. The pilot operated safety valve diaphragm valve flap structure of claim 1 or 2, wherein: the valve rod head (7) is of a spherical structure and is inserted into the valve rod head connecting hole (19) in an inserting mode, the valve rod head can flexibly and freely rotate, and the flexibility of the valve clack is guaranteed.
5. The pilot operated safety valve diaphragm valve flap structure of claim 1 or 3, wherein: the adjusting screw (5) is provided with a through hole, so that medium pressures on two sides of the diaphragm (2) are always in a balanced state, and the sealing performance of the diaphragm (2) is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110754744.2A CN113324076B (en) | 2021-07-05 | 2021-07-05 | Pilot type relief valve diaphragm formula valve clack structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110754744.2A CN113324076B (en) | 2021-07-05 | 2021-07-05 | Pilot type relief valve diaphragm formula valve clack structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113324076A true CN113324076A (en) | 2021-08-31 |
| CN113324076B CN113324076B (en) | 2024-08-13 |
Family
ID=77425492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110754744.2A Active CN113324076B (en) | 2021-07-05 | 2021-07-05 | Pilot type relief valve diaphragm formula valve clack structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113324076B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1698815A1 (en) * | 2005-03-04 | 2006-09-06 | Mesura | Operating device of a safety valve of a gas regulator |
| CN2921497Y (en) * | 2005-10-21 | 2007-07-11 | 河北巨英阀门制造有限公司 | Micro-block flow-limiting non-return valve |
| CN201875217U (en) * | 2010-09-30 | 2011-06-22 | 北京航天动力研究所 | Pilot operated safety valve used under low temperature operating condition |
| CN104514901A (en) * | 2013-09-29 | 2015-04-15 | 北京航天动力研究所 | Plastic sealing type pilot-operated safety valve |
| CN105318060A (en) * | 2015-02-28 | 2016-02-10 | 刘海亮 | Membrane auxiliary type micro-pressure working condition compression bar destabilizing trigger type emptying pressure relief valve |
| CN107202170A (en) * | 2017-07-07 | 2017-09-26 | 浙江天和阀门有限公司 | A kind of processing method of spring Fluorine-lined safety valve and its flap component and flap component |
| CN108708999A (en) * | 2018-07-13 | 2018-10-26 | 四川长仪油气集输设备股份有限公司 | A kind of low-pressure pilot-type safety valve |
| CN110864147A (en) * | 2019-11-26 | 2020-03-06 | 北京北燃环能科技发展有限公司 | Cut-adjusting integrated pressure regulator and integrated gas pressure regulating core |
| CN111981169A (en) * | 2020-08-31 | 2020-11-24 | 四川长仪油气集输设备股份有限公司 | Pilot operated safety valve for urban gas |
| CN216158381U (en) * | 2021-07-05 | 2022-04-01 | 杭州杭氧工装泵阀有限公司 | Diaphragm type valve clack structure of pilot operated safety valve |
-
2021
- 2021-07-05 CN CN202110754744.2A patent/CN113324076B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1698815A1 (en) * | 2005-03-04 | 2006-09-06 | Mesura | Operating device of a safety valve of a gas regulator |
| CN2921497Y (en) * | 2005-10-21 | 2007-07-11 | 河北巨英阀门制造有限公司 | Micro-block flow-limiting non-return valve |
| CN201875217U (en) * | 2010-09-30 | 2011-06-22 | 北京航天动力研究所 | Pilot operated safety valve used under low temperature operating condition |
| CN104514901A (en) * | 2013-09-29 | 2015-04-15 | 北京航天动力研究所 | Plastic sealing type pilot-operated safety valve |
| CN105318060A (en) * | 2015-02-28 | 2016-02-10 | 刘海亮 | Membrane auxiliary type micro-pressure working condition compression bar destabilizing trigger type emptying pressure relief valve |
| CN107202170A (en) * | 2017-07-07 | 2017-09-26 | 浙江天和阀门有限公司 | A kind of processing method of spring Fluorine-lined safety valve and its flap component and flap component |
| CN108708999A (en) * | 2018-07-13 | 2018-10-26 | 四川长仪油气集输设备股份有限公司 | A kind of low-pressure pilot-type safety valve |
| CN110864147A (en) * | 2019-11-26 | 2020-03-06 | 北京北燃环能科技发展有限公司 | Cut-adjusting integrated pressure regulator and integrated gas pressure regulating core |
| CN111981169A (en) * | 2020-08-31 | 2020-11-24 | 四川长仪油气集输设备股份有限公司 | Pilot operated safety valve for urban gas |
| CN216158381U (en) * | 2021-07-05 | 2022-04-01 | 杭州杭氧工装泵阀有限公司 | Diaphragm type valve clack structure of pilot operated safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113324076B (en) | 2024-08-13 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20220818 Address after: 7th Floor, Building 1, No. 59, Nanzhu Avenue, Beihai City, Guangxi Zhuang Autonomous Region, 536002 Applicant after: National pipe network group Beihai LNG Co.,Ltd. Applicant after: HANGZHOU HANGYANG KOSO PUMP & VALVE Co.,Ltd. Address before: 311300 No.99, East Ring Road, Qingshanhu street, Lin'an City, Hangzhou City, Zhejiang Province Applicant before: HANGZHOU HANGYANG KOSO PUMP & VALVE Co.,Ltd. |
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